Steam-pump



C. l?.l DEANE. Steam` Pump.

Patented Jung 7,1881.

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` engine; that Dindicates the UNITED STATES PATENT OFFICE.

CHARLES P. DEANE, OF SPRINGFIELD, MASSACHUSETTS.

STEAM- PUMP.

SPECIFICATION forming part of Letters Patent No. 242,609, dated .Tune '7, 1881.

Application filed March 5, 1881. (No model.)

To all whom it may concern:

Beit known that I, CHARLEs P. DEANE,ol Springfield, in the county of Hampden and State of Massachusetts, have invented a new and useful improvement in direct-actingsteampumps and their appendages when the same are used for exhausting air or gases, with or without accompanying liquids, but more cspecially when designed to constitute a con1- plete and independent condensing apparatus for steam-engines 5 and I do hereby declare that the following is a full and exact description of' my improvement, reference being had to the accompanying drawings and the letters of reference thereon, in which- Figure l is a longitudinal central and vertical section ot' the pump proper and its appendages, with the pump-engine in elevation, and Fig. 2 is a transverse section on the line z z, Fig. 1, with the incumbent parts in elevation.

The nature of my invention consists in so arranging the suction or inlet valves of the pump, substantially as hereinafter described, that the larger part of them, and these cover ing openings which communicate directl y with the snetioirchamber, will fall to their seats by their own gravity, while the remaining ones open downward and control a passage or pas sages which extend to and communicate only with the upper part ofthe condenser, or with suon other part, according to the construe tion, as most invites concentration of the air therein, by which arrangement a more perfect vacuum is produced than heretofore attainable, and at the same time the well-known necessity forfrequent renewal of valves is ob viated, as will be hereinafter more fully explained.

To enable others skilled in the art to make and use my invention,-Irwil1 now describe its construction and operation.

The principal parts of the apparatus, being common and well understood, will only need to be referred to. l

In the drawings, which represent the apparatus as improved by me, it will be seen that A is the pump-cylinder, and B its piston; that C is the pistonrod`of both the pump and pump pump-chambers, E the condenser, and F the Vexhaust-pipe of the engine. a is the suction-chamber, and b the discharge-chamber. e indicates, in Fig. 1, theplace of the dischargeopenings. `(Shown and marked o, in Fig. 2.) d is the flanged opening for injection in the condenser-cap. e and c' are the suction-valves controlling openings from chamber a. fandf are small suctionvalves controlling the outlets ot' a pipe, g, extending to and communicating only with the upper part of the condenser. h and k are the discharge-valves. i is the sprayplate, perforated vertically to sprinkle the water into the condenser.

In a condensing apparatus the purpose of the pump, ofcourse, is to remove the contents of the condenser and make the vacuum therein as nearly perfect as possible, and it is there fore important that the vacuum primarily produced in the pump-chamber D should be as nearly as possible attained in the condenser; and as it needs must be less perfect in the latter by so much as is required to effect the opening ofthe intervening valves, it is essential thatthese should be so arranged as to opcrate as easily as practicable', and hence valves opening downward have been used; but my invention, recognizing the fact that both air and water are to be removed from the condenser, provides distinctively for each, for it is found that valves opening downward,made, as they should be for this purpose, of rubber or other flexible material, soon lose their proper form and fail to close tightly, and so need very frequent renewal, and this evil increases with the area of the valve.' I therefore so arrange the larger part of the suction-valves (those indicated by the letter e) that they will fall to their seats and lie ilat thereon when the pump is at rest by their own weight, and thus the evil above referred to is avoided, so far as these valves are concerned, and as they have to do chielly with water, and that passingfrom the condenser through its bottom,the gravity and momentum of the fluid are more than suicient to balance the weight ofthe valves, and thus prompt and easy opening is insured.

The suction-valves f, being small, may be arranged, as shown, so as to open downward, and they control, as will be seen, the outlet of the pipe g, which extends to and has inlets only at the upper part of the condenser, where it may be T-shaped and the horizontal part ICO perforated. rlhesc inlets, being near the top and directly belour the unperforatcd portion ot' the spray-plate usually left to cheek the eur rent and spread the water, draw from the coudenser at the pointwherc the air therein tends to concentrate, so that the valves/"have to do chiefly with that lluid, and are made too small to be subject to the objection abovementioned to down-opening Valves in general. Thus it will be seen that the air and the water are simultaneously drawn from the condenser, und each mainly from the point where it is freest from the other. It will be seen, further, that I place the seats of thelarger valves, e, lower than those of' the small ones, f, and the seats of both niueh lower than those of the discharge-valves h. rlhe former I do preferably, but the latter is important. Under this arrangement, (in pumping;` air or gases) when the oscillating water ofthe pump is forced upward by the action ol' the piston the larger valves, @,are submerged before the smaller ones,f, are reached, and both are submerged and seated by a non-elastic Tluid when a considerable portion of the stroke of the piston is still to be made, and therefore no air or gas can now possibly escape, except by wey ofthe discharge-valves h, through which it must be wholly expelled when, the stroke completed, the water has reached or passed their seats.

Having fully described my invention, what 1 claim, and desire to secure by Letters Pat cnt, is-

1. The combination, with the air-valvesf iu the pump-chmnber, ofthe pipe g, extending to and openingT for inlet at that part of the condenser l where the air therein tends to con' centrate, substantially as and for the purpose described.

2. The combination, with the suction-Valves e, communicating` with the suction-chamber a., ofthe air-velvesf, communicating with the condenser E, substantially as and for the purpose described.

3. The arrangement with respect to the disclmrge-val\es It of both the Water-valves e and the airyalres f at a considerable distance below the discharge-Valves, substantially as shown, and for the purpose described.

CHARLES P. DEANE.

Witnesses:

GEO. H. DEANE, IoBEn'r O. Moums.

Correction of Letters Patent No. 242,609.

It ris luiereby oetied that in Letters Patent No. 242,609, issued June 7, 1881, to Charles P. Deane for an improvement in Steam Pumps, on page 2 of the printed specification attached to and forming a part of said Letters Patent, the Word sealed, "f in line 21, was erroneously printed seated; that the proper corrections have been made in the les and records pertaining to the case in the Patent Office, by made in said Letters Patent.

Signed, eountersigned, and sealed this 21st dey of June, A. D. 1881.

and are here- [SEAL] A. BELL,

Acting-Secretary of the Interior. Gountersigned E. M. MARBLE,

Gommissoner of Patents. 

